Johnson Pump 09-1027B-10 Impeller Kit
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The Johnson Pump 09-1027B-10 Impeller Kit is a complete raw water pump service kit designed for Johnson F5 and F5B series pumps used in marine engine cooling systems. This kit includes a precision-molded impeller along with sealing components and lubricant to restore proper water flow and ensure reliable engine cooling.
Manufactured from durable MC97 marine-grade neoprene/EPDM compound, this impeller delivers maximum flow efficiency and long service life in both freshwater and saltwater environments. Replacing a worn impeller helps maintain consistent cooling performance and protects your engine from overheating and damage.
This impeller is commonly used in Volvo Penta and other marine engines equipped with crank-driven Johnson F5 pumps, making it a critical maintenance item.
Key Features
- Genuine Johnson Pump impeller kit
- MC97 marine-grade neoprene / EPDM construction
- 12-blade flexible impeller design
- Splined hub for secure fitment
- Designed for maximum water flow and durability
- Includes gasket, O-ring, and lubricant for full service
Engine Compatibility
Johnson Pump Applications
Fits Johnson raw water pumps including:
- F5 series pumps
- F5B pump assemblies
➡️ Commonly used on Volvo Penta and GM-based marine engines with crank-driven pumps
Serial Number Fitment Notice
Fitment depends on:
- Pump model (F5 / F5B required)
- Shaft spline configuration
- Engine application
⚠️ Always confirm compatibility using your pump model or engine serial number before ordering.
Impeller Specifications
- Outer Diameter: 2.25" (57 mm)
- Width: ~1.24" (31.8 mm)
- Shaft: Splined hub
- Blade Count: 12
- Material: MC97 neoprene / EPDM
What’s Included in the Kit
- Impeller
- Pump cover gasket
- O-ring
- Lubricant packet
When This Part Needs Replacement
Replace the impeller if you notice:
- Reduced or no cooling water flow
- Engine overheating
- Cracked, missing, or stiff vanes
- Reduced performance under load
Recommended service interval: every 100 hours or annually
Installation Notes
- Lubricate impeller before installation
- Install with correct vane direction
- Replace all included seals and gaskets
- Inspect pump housing and wear surfaces
- Check for broken vane debris in system
Alternate / Superseded Part Numbers
OEM Cross References
- Johnson Pump: 09-1027B-10
- Replaces: 09-1027B-1
Cross References
- Volvo Penta: 21951348
- Jabsco: 1210-0001 (application dependent)
- Sherwood: Equivalent F5 applications (verify)
Shipping
Shipping: Ships same or next day for fast Canada wide shipping. ⚓
💡 Parts Desk Insight
This is one of the most common Johnson F5 impellers and a direct cross to several Volvo Penta applications. The key identifier is the 12-blade design and spline hub—if those match, you’re on the right part 👍
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.